Table T3. Geochemistry of modern surface sediments in the eastern tropical Pacific (SETPAC) with Bio-Ba/Corg ratios.

Table T3. Geochemistry of modern surface sediments in the eastern tropical Pacific (SETPAC) with Bio-Ba/C_org ratios.


Core	Sample ID	Core depth (cm)	Water depth (m)	Latitude (°)	Longitude (°W)	Elements (wt%)										Elements (ppm)
Core	Sample ID	Core depth (cm)	Water depth (m)	Latitude (°)	Longitude (°W)	Na	Mg	Al	Si	P	S	K	Ti	Mn	Fe	Rb	Sr	Ba
OC73-3-7	MP24043	3–5	4,247	–17.87	101.04	0.65	2.33	6.90	21.44	0.76	0.35	2.29	0.41	3.28	10.09	71	823	15,516
Y71-6-16	MP24025	6–8	6,761	–16.92	74.33	0.86	1.58	7.24	31.29	0.09	0.19	2.28	0.40	0.08	3.96	135	364	803
Y71-6-26	MP24026	7–9	4,813	–15.27	76.37	0.98	1.89	6.94	32.13	0.13	0.09	2.27	0.39	0.06	5.37	120	292	1,667
Y71-6-8	MP24024	3–5	5,273	–13.75	77.72	0.00	1.27	6.25	33.05	0.13	0.58	1.93	0.37	0.05	3.10	167	317	1,805
Y71-8-55	MP24033	5–7	6,309	–11.63	79.25	0.00	1.39	6.63	32.99	0.12	0.33	1.92	0.37	0.11	5.13	131	245	1,749
Y71-7-49	MP24031	3–5	3,116	–11.10	110.32	0.00	2.65	1.60	16.33	0.91	0.57	0.57	0.35	6.77	24.34	129	8,922	7,422
Y71-7-28	MP24027	3–5	4,491	–11.02	85.02	0.32	1.90	8.05	31.56	0.08	0.11	2.27	0.41	0.45	5.42	123	331	6,571
Y71-7-32	MP24030	3–5	3,850	–10.75	93.10	0.14	3.21	5.99	24.48	0.69	0.71	1.85	0.34	2.59	7.41	86	2,742	29,449
Y71-7-30	MP24028	10–12	4,237	–10.05	88.68	0.17	1.78	7.39	31.94	0.13	0.21	2.04	0.36	0.35	5.36	102	475	13,172
Y71-7-31	MP24029	3–5	4,114	–9.93	91.97	0.65	2.28	7.40	29.94	0.31	0.43	1.96	0.34	0.96	5.76	91	1,160	20,983
Y71-8-61	MP24034	3–5	5,843	–9.35	80.78	0.00	1.26	6.30	33.51	0.13	0.48	1.87	0.36	0.05	4.06	126	244	1,142
AMPH25GC	MP15096	2–5	3,660	–9.05	105.88	0.00	3.26	2.28	25.69	0.60	1.12	0.65	0.41	3.54	12.01	209	17,540	24,882
Y71-8-76	MP24035	7–9	5,122	–8.12	81.60	0.00	1.40	7.52	31.16	0.11	0.49	1.94	0.43	0.05	4.41	138	222	929
AMPH16GC	MP15087	0–5	3,240	–7.85	108.92	0.00	2.86	0.76	27.26	0.43	0.47	0.26	0.22	4.00	14.90	120	8,807	8,179
Y71-8-79	MP24036	3–5	6,165	–7.83	81.28	0.16	1.29	7.19	32.61	0.09	0.41	1.95	0.42	0.06	4.16	140	205	860
AMPH11PC	MP15082	0–4	3,728	–7.47	113.53	0.00	2.73	1.19	27.34	0.28	0.65	0.54	0.20	3.64	12.97	187	7,517	10,762
OC73-1-2	MP24044	3–5	3,160	–7.28	107.62	0.00	2.95	1.29	28.41	0.47	1.07	0.28	0.40	2.35	12.40	200	14,056	9,553

Core

Sample ID

Core depth (cm)

Water depth (m)

Normal biogenic SiO₂ (wt%)

Normal CaCO₃ from Ca (wt%)

Salt (wt%)

H₂O based on Cl (%)

Sum of oxides

CaCO₃ (LECO) (wt%)

C_org uncorrected (LECO) (wt%)

C_org, salt and CC-free (wt%)

Bio-Ba* (ppm)

Bio-Ba/C_org ratio

OC73-3-7 MP24043 3–5 4,247 10 17.2 9.5 75.4 91.2 16.3 0.292 0.362 14,999 4.15

Y71-6-16 MP24025 6–8 6,761 32.3 0.8 7.2 69.4 94.9 0.7 1.171 1.286 260 0.02

Y71-6-26 MP24026 7–9 4,813 33.9 1.8 7.2 69.6 98.9 1.5 1.165 1.259 1,147 0.09

Y71-6-8 MP24024 3–5 5,273 41.4 0.5 11.6 79.4 93.5 0.4 2.572 2.801 1,336 0.05

Y71-8-55 MP24033 5–7 6,309 39.3 0.3 11 78.4 97.3 0.7 1.608 1.785 1,252 0.07

Y71-7-49 MP24031 3–5 3,116 26.8 81.8 6.6 67.6 93.5 82.5 0.301 1.851 7,302 0.39

Y71-7-28 MP24027 3–5 4,491 27.7 0 10.9 78.2 99.9 0.8 0.464 0.506 5,968 1.18

Y71-7-32 MP24030 3–5 3,850 20.8 55.4 7.9 71.6 92.6 57.7 0.217 0.555 29,000 5.22

Y71-7-30 MP24028 10–12 4,237 32 0 13.5 82 99.4 0.5 0.466 0.510 12,618 2.48

Y71-7-31 MP24029 3–5 4,114 27 29.4 14 82.6 99.4 30.1 0.582 0.899 20,428 2.27

Y71-8-61 MP24034 3–5 5,843 42.2 0 8.3 72.6 95.8 0.4 2.147 2.401 669 0.03

AMPH25GC MP15096 2–5 3,660 44.1 88 6 63.9 94.7 86.9 0.271 2.215 24,711 1.12

Y71-8-76 MP24035 7–9 5,122 31.5 0 9.5 75.5 93.9 0.8 2.403 2.686 365 0.01

AMPH16GC MP15087 0–5 3,240 53.6 83.9 7.5 69.4 96 84.3 0.251 1.726 8,122 0.47

Y71-8-79 MP24036 3–5 6,165 36.4 0 7.5 70.3 95.9 0.6 1.917 2.063 321 0.02

AMPH11PC MP15082 0–4 3,728 51.8 79.5 8.1 71 93.7 80.5 0.174 0.996 10,673 1.07

OC73-1-2 MP24044 3–5 3,160 54.2 86.7 6.9 68.5 94.3 86.1 0.353 2.912 9,456 0.32

Core	Sample ID	Core depth (cm)	Water depth (m)	Normal biogenic SiO₂ (wt%)	Normal CaCO₃ from Ca (wt%)	Salt (wt%)	H₂O based on Cl (%)	Sum of oxides	CaCO₃ (LECO) (wt%)	C_org uncorrected (LECO) (wt%)	C_org, salt and CC-free (wt%)	Bio-Ba* (ppm)	Bio-Ba/C_org ratio
OC73-3-7	MP24043	3–5	4,247	10	17.2	9.5	75.4	91.2	16.3	0.292	0.362	14,999	4.15
Y71-6-16	MP24025	6–8	6,761	32.3	0.8	7.2	69.4	94.9	0.7	1.171	1.286	260	0.02
Y71-6-26	MP24026	7–9	4,813	33.9	1.8	7.2	69.6	98.9	1.5	1.165	1.259	1,147	0.09
Y71-6-8	MP24024	3–5	5,273	41.4	0.5	11.6	79.4	93.5	0.4	2.572	2.801	1,336	0.05
Y71-8-55	MP24033	5–7	6,309	39.3	0.3	11	78.4	97.3	0.7	1.608	1.785	1,252	0.07
Y71-7-49	MP24031	3–5	3,116	26.8	81.8	6.6	67.6	93.5	82.5	0.301	1.851	7,302	0.39
Y71-7-28	MP24027	3–5	4,491	27.7	0	10.9	78.2	99.9	0.8	0.464	0.506	5,968	1.18
Y71-7-32	MP24030	3–5	3,850	20.8	55.4	7.9	71.6	92.6	57.7	0.217	0.555	29,000	5.22
Y71-7-30	MP24028	10–12	4,237	32	0	13.5	82	99.4	0.5	0.466	0.510	12,618	2.48
Y71-7-31	MP24029	3–5	4,114	27	29.4	14	82.6	99.4	30.1	0.582	0.899	20,428	2.27
Y71-8-61	MP24034	3–5	5,843	42.2	0	8.3	72.6	95.8	0.4	2.147	2.401	669	0.03
AMPH25GC	MP15096	2–5	3,660	44.1	88	6	63.9	94.7	86.9	0.271	2.215	24,711	1.12
Y71-8-76	MP24035	7–9	5,122	31.5	0	9.5	75.5	93.9	0.8	2.403	2.686	365	0.01
AMPH16GC	MP15087	0–5	3,240	53.6	83.9	7.5	69.4	96	84.3	0.251	1.726	8,122	0.47
Y71-8-79	MP24036	3–5	6,165	36.4	0	7.5	70.3	95.9	0.6	1.917	2.063	321	0.02
AMPH11PC	MP15082	0–4	3,728	51.8	79.5	8.1	71	93.7	80.5	0.174	0.996	10,673	1.07
OC73-1-2	MP24044	3–5	3,160	54.2	86.7	6.9	68.5	94.3	86.1	0.353	2.912	9,456	0.32

Notes: Bio-Ba/C_org ratios are from Lyle, 1992 (data table previously unpublished). * = Ba – 0.0075 x Al. Elemental data are salt and calcium carbonate (CC) corrected unless noted. Samples highlighted in this study are located ±5º latitude and >100ºW longitude. Only a portion of this table appears here. The complete table is available in ASCII.